ISO 32000 & Arlington Specification Grammar Engine

Arlington PDF Model Validator — Audit ISO 32000-2 DOM & Schemas

Validate PDF catalog dictionaries and object schemas against the ISO 32000-2 Arlington PDF Model online for free. 100% private in-browser DOM inspection.

Arlington Grammar RulesDocument Catalog /TypeMetadata Timestamp SyntaxPage Box Geometry Bounds100% In-Browser Privacy

DROP PDF FILES HERE

Upload documents to inspect and validate against the Arlington PDF Model

100% local browser processing

Arlington PDF Model schema checks

Downloadable HTML audit report

Quick Start

How Arlington PDF Model Inspection Works

Audit dictionary constraint rules against the formal ISO 32000 specification in three simple steps.

Upload PDF Documents

Select or drag your PDF document into the client workspace. Parsing executes 100% locally in browser memory.

Traverse Object Tree

The inspector unpacks root catalogs, page directories, and dictionary keys against formal Arlington constraints.

Audit Spec Conformity

Inspect highlighted constraint violations, explore key-value data classes, and export standalone HTML audit reports.

Core Capabilities

Four Core Arlington Inspection Modules

Inspect PDF objects and structural dictionary keys against formal Arlington specification rules.

Grammar Audit

Document Catalog /Type

Inspects the /Catalog root dictionary to verify required /Type keys and valid extensions against ISO 32000 specifications.

Root dictionary validation

Syntax Verification

Info Dictionary Syntax

Validates CreationDate and ModDate strings against strict ASN.1 date grammar (D:YYYYMMDDHHmmSSOHH'mm') to eliminate parser ambiguity.

Metadata syntax analysis

Viewport Geometry

Page Bounds & Geometry

Audits /MediaBox, /CropBox, and /BleedBox arrays ensuring four numeric coordinates and valid spatial boundaries without corrupt dimensions.

Bounding box geometry check

Audit Reporting

HTML Report Generation

Generates an exportable, self-contained HTML audit report mapping every object deviation, constraint violation, and ISO section.

Downloadable HTML audit report

Architecture Analysis

Utilvo Client-Side Inspector vs Cloud Services

Compare architectural depth and document protection between client-side AST inspection and traditional cloud validators.

Evaluation Dimension	Utilvo Arlington Inspector	Traditional Cloud Parsers
Audit Privacy & Data Security	100% Client-Side In-Memory (Zero server uploads)	Uploads confidential PDF binaries to remote cloud servers
Arlington Grammar Verification	Direct AST validation of keys, types, and predicates across PDF 1.0 - 2.0	Superficial syntax checks overlooking deep dictionary constraints
Interactive Object Hierarchy	Dynamic hierarchical tree explorer with key-level data class inspection	Unstructured flat terminal logs without navigable object paths
ASN.1 Date Syntax Auditing	Strict regex verification of CreationDate and ModDate timestamp formats	Ignores corrupt date syntax leading to downstream parser failures
Pricing & Constraints	100% Free, unlimited document audits, zero account registration	Paywalled credit systems, throttled file sizes, mandatory sign-ups

Deep Dive

ISO 32000-2 Arlington TSV Predicates & Dictionary Validation

Technical specifics on Arlington Model grammar predicates, root catalog verification, and in-memory parsing isolation.

Arlington Grammar & Predicate Rules

The Arlington PDF Model defines every object in ISO 32000 as a machine-readable tabular grammar. Each dictionary key associates with permitted data types, version requirements, and conditional predicates, enabling automated audit engines to flag non-conforming PDF keys.

Root Catalog & Extension Dictionaries

Under ISO 32000-1 Clause 7.7.2, the document catalog must define /Type as /Catalog. The validator audits root dictionaries to ensure mandatory keys are present and verifies that extension schemas and structure tree pointers resolve to valid indirect references.

Timestamp Syntax & ASN.1 Date Grammar

PDF date fields in /Info dictionaries must obey strict ASN.1 syntax: D:YYYYMMDDHHmmSSOHH'mm'. Our parser detects malformed timestamp strings that omit timezone offsets or include invalid separators, preventing metadata parsing failures in archiving workflows.

Page Geometry & Boundary Arrays

Page boundary definitions (/MediaBox, /CropBox, /BleedBox) require four numeric elements [llx, lly, urx, ury]. The engine validates that bounding boxes are well-formed rectangles with urx > llx and ury > lly to guarantee proper rendering on commercial RIP devices.

Preparation

How to Audit PDF Object Trees Against the Arlington Model

Follow these recommended verification steps before performing deep dictionary inspections.

Verify Root Dictionary

Confirm the document catalog defines /Type as /Catalog to comply with ISO 32000 structure.

Inspect Date Strings

Ensure CreationDate and ModDate metadata strings strictly obey the standard ASN.1 prefix.

Check MediaBox Arrays

Audit page dimensions to guarantee bounding box arrays contain four valid numeric elements.

Export Audit Report

Download the standalone HTML diagnostic file to archive compliance logs for QA records.

Specifications

Arlington Model Inspection Matrix

Specification standards and dictionary rule criteria evaluated by the in-browser Arlington inspector.

Specification Vector	ISO Standard Clause	Processing Engine	Output Structure	Memory Model	Recommended Use Case
Catalog Root Dictionary	ISO 32000-1 § 7.7.2	Client-Side Parser	Interactive AST Tree	Direct RAM byte buffer	Validates document root entry points
Metadata Date Grammar	ISO 32000-1 § 7.9.4	Client-Side Parser	ASN.1 Syntax Audit	Direct RAM byte buffer	Checks timestamp formatting compliance
Page Directory & Boxes	ISO 32000-1 § 7.7.3	Client-Side Parser	Geometry Boundary Matrix	Direct RAM byte buffer	Verifies /MediaBox and /CropBox coordinates
Interactive Form Fields	ISO 32000-1 § 12.7	Client-Side Parser	AcroForm Field Registry	Direct RAM byte buffer	Inspects signature and input widget dictionaries

Got Questions?

Frequently Asked Questions

Everything you need to know about inspecting PDF object schemas against the Arlington Model.

What is the Arlington PDF Model and what does it validate?

The Arlington PDF Model is a comprehensive machine-readable specification defining valid keys, types, and relationships for every object in the ISO 32000 standard.

Does this tool upload my documents to external servers?

No. The entire structural traversal, dictionary constraint parsing, and schema validation execute 100% locally in your browser memory with zero server uploads.

What causes Arlington PDF Model constraint warnings?

Common warnings include missing /Type /Catalog in the root dictionary, non-standard date string formats, and invalid /MediaBox or /CropBox array structures.

Which versions of the PDF standard does the inspector cover?

It validates objects and structural dictionary rules spanning PDF 1.0 through ISO 32000-1 (PDF 1.7) and the latest ISO 32000-2 (PDF 2.0) specifications.

Who should use the Arlington PDF Model Inspector?

It is engineered for PDF developers, pre-press specialists, and accessibility engineers needing to diagnose structural compliance issues in local environments.

Can I export an audit report of Arlington Model constraint violations?

Yes. Once the dictionary tree is analyzed, you can download a complete standalone HTML audit report detailing all deviation paths and rule violations.

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